The user log (ULOG) is a file to which all messages generated by the BEA Tuxedo system-error messages, warning messages, information messages, and debugging messages-are written. Application clients and servers can also write to the user log. A new log is created every day and there can be a different log on each machine. However, a ULOG can be shared by multiple machines when a remote file system is being used.

The ULOG provides an administrator with a record of system events from which the causes of most BEA Tuxedo system and application failures can be determined. You can view the ULOG, a text file, with any text editor. The ULOG also contains messages generated by the tlisten process. The tlisten process provides remote service connections for other machines. Each machine, including the master machine, should have a tlisten process running on it.